An amperometric L-tryptophan sensor platform based on electrospun tricobalt tetroxide nanoparticles decorated carbon nanofibers

作者：Zhao Dongsheng; Lu Youlan; Ding Yaping^*; Fu Rong

来源：Sensors and Actuators B: Chemical , 2017, 241: 601-606.

DOI：10.1016/j.snb.2016.10.010

• Tricobalt tetroxide nanoparticles
• Carbon nanofibers
• L-tryptophan
• Electrochemical determination

A glassy carbon electrode (GCE) modified with electropun tricobalt tetroxide nanoparticles decorated carbon nanofibers (Co3O4-CNF) were first applied for the determination of L-tryptophan (L-Trp). The synthesized Co3O4-CNF was characterized by scanning electron microscopy, Raman, X-ray diffraction and electrochemical impedance spectroscopy. The electrochemical detection of L-try was successfully conducted in 0.1 M phosphate solution (pH 2). The linear relationship of L-Trp was in the range of 0.005-40 mu M and the detection limit reached 0.002 mu M (S/N = 3) with little interference from other amino acids.

• 出版日期2017-3-31
• 单位上海大学